Shock absorber



Patented Nov. lli, l92-45.-.

ica,

SHOCK ABSOR'BER.

Application filed @climber 18, E923. Serial 669,351.

l/ 10 all w lio/m, t may concern Be it known that l, EDWARD ll. Davis, a citizen of the United States, residing at Cambridge, in the county of Guernsey and State of Ohio, have invented certain new and useful improvements in Shock Absorbers, ot which the following is a speciiication.

This invention relates to improvements in shock absorbers adapted for absorbing the rebound of an automobile spring.

The invention is directed particularly to a construction wherein a cylinder is secured in a vertical position to the axle of an au.- tomobile and provided with adjustable restricted exhaust openings, the cylinder re ceiving a piston having a valve in the end portion adapted to permit inlet of air on the outward or downward stroke, the lower end of the piston projecting below the bottom of the cylinder and formed with oppositely extending lateral projections on which are journalled the ends of connecting links pivotally secured to a member carried by the frame.

The invention is more particularly described in the following description and illustrated in the drawings in which,

Figure l is a side elevational view oi the present invention,

Figure 2 is a longitudinal sectional view,

Figure 3 is a perspective view showing how the present invention is applied,

Figure l is a detailed sectional view of the valve structure, and

Figure 5 is a transverse sectional view of the valve removed.

1 indicates the axle of an automobile supporting the body of the automobile on a frame Q through the medium of springs, not shown, so that in the use of the automobile the body is resiliently supported by the axle in a well known manner.

t is also well known that as the automobile rides over irregular surface or drops into rots in the roadway that the downward movement of the body relative to the axle on the springs is followed by a quick upward movement due to the rebound of the springs into their normal positions which, however, causes the body to move past the normal position of the springs in the rebound and occasions considerable jolt to the body and occupants of the automobile. rll'he present invention is designed to o 7ercome this rebound action and permit the gradual return oi the springs to the normal position and includes the cylinder provided with a bracket mounted on the lower end thereof adapted l?" to par iallyv encircle the axle 'land n'iembe pivoted thereto cooperating "3th tlie'bracket to secure the cylinder to the rear axle. The closed end of the cylinder is provided at 6- with adjustable 65 restricted exhaust openings and a stud receives the end ot a brace member Q which is extended and secured to the reach rod 9 as indicated at lO- for insuring a rigid mounting of the cylinder with respect to the axle lt i piston ll is mounted for reciprocating movement in the cylinder and is provided with a cylindrical valve M having a flanged head l3 adapted to seat in the head of the piston and limit the movement of the valve in one direction in which position the openings M ot the valve are closed to prevent the admission of air to the cylinder. `The vother end of the valve l2 is provided 'with lateral ex tensions l5 tor limiting upward move ment ot the valve in the piston head but permitting suliicient movement to allow the openings M to admit air to the cylinder. The lower end oit the piston projects below the cylinder and is provided with oppositely disposed lateral projections l6 through which extends a bolt 17 on which are journalled the ends of connecting links or hangers 18 the opposite ends of the links being pivotally mounted on a hanger bolt 19 carried by a bushing 20 having a threaded projection 21 extending through an opening in the frame Q to which it is secured.

In the downward movement of the frame Q toward the axle 1 the piston ll is moved outwardly and downwardly in the cylinder 3 during which movement the valve 12 moves upwardly in the piston to permit the intake of air into the cylinder and upon the upward or rebound movementI of the frame relative` to the axle the valve l2 moves downwardly so that the head 13- seatsagainst the head of the piston closing the openings llwhereafter the air in the cylinder is compressed and permitted to slowly exhaust through the openings 6 in the closed end of the cylinder which governsprevents theusual quick reboundl olf the' trame andl permits it to have a slow gradual return movement` to the normal position ot the springs.. ln

this way the sudden shocks and jolt-s occasioned in running an automobile over aY rough road are eliminated and the same will have easier riding qualities.

1What is claimed is:

l). A* rebound shock absorber including a cylinder having means for securing itl to' the axle ci? an automobile and having r stricted exhaust openings, a piston mounted in the c linder 'for reci roc-atm@ movement a valve mounted in the piston for admitting air on the outward stroke, and means for connecting the piston with the frame of the automobile tor movement therewith.

2. rebound absorber including a cylinder secured. to the axle of an automobile and having restricted exhaust openings, a

piston mounted for reciprocating movement in the cylinder, a cylindrical valve membermounted in the piston 'for admitting air to the cylinder on the outward stroke, and means for connecting the piston with the frame of the automobile for movementair on the outward stroke, and connectingl links pivotally secured to the piston and the trameo't the automobile for attaching the piston ior movement with said frame;

4l. A rebound shock absorber including va cylinder having means for securing it tothe axle of an automobile and hav-ing. restricted eXhaust openings, a piston mountedl in the cylinder for reciprocating movement, a valve mounted in the piston for admitting air on the outward stroke, said piston having lateral extensions from opposite sides thereof beyond the cylinder, and a connecting link having one-end pivotally mounted on each extension and the otherl end pivot ally connected with the. frame tothe piston crmovement with said frame'.

5. A" rebound absorber including a cylinder disposed in vertical position having'f'v the open endv at the bottom and removably secured to the axle' ci' an automobile, said` cylinder alsoy having adjustable restrictedexhaust openings, a piston mounted inthe cylinder for reciprocating movement therein projecting beyond the lower'end of thecylihv inder and havingA an air inlet valve therein, said piston having a pair of opposite lateral projections on thelow'er end', and conf nectin'g llinksl -journalled'-c on= saidr extensions and pivotallfy connected tothe frameE of the automobile' for attaching the piston for movement therewith 6. A rebound shock absorberincluding a' cylindersecuredito the a-Xle of an` autome-v lb-ile and having' restricted' eXhai-ist. opfenfy ings, means to adj'u'stablji restrict said em haust`r openings, af piston mounted for ref` ciprocatin'g mei/ement in the cylinder, a-c'yf lindrical valve member mountedI in-the' pis-V ton for admitting air to the" cylinder on the outward stroke, andK means for connecting the piston with the frame of the automobile 'for movement therewith.

In testimony'whereof I vaiiizr mysignature.

EDWARD B; niivifs 

